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Parallax Ping))) Theremin 


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Parallax Ping))) Theremin 

Written By: Ethan Flubacher 


ProtoShield (1) 
USB A to B cabled) 

I <} PARTS: 

Arduino microcontroller (1) 


LCD screen (1) 

10k Pot (1) 

8 Ohm mini speaker (1) 

PING))) Ultrasonic Sensor (1) 

Small Breadboard (1) 

headphone jack (1) 

Resistors. 1kQ (1) 


This guide will cover the basic concept of the Ping))) sensor by making a fun project. 

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Parallax Ping))) Theremin 

Step 1 — Wire LCD backlight/logic circuits 

• Wire backlight according to pins on 
LCD. Same for logic circuits. Pot 
wiper goes to Vo (contrast), one 
outer pin of the pot goes to ground, 
the other to 5v. 

• Make sure polarities are 


• Use pot to control contrast 
to your needs. 

Step 2 — Wire the digital pins 

• * LCD RS pin to digital pin 12 * 
LCD Enable pin to digital pin 1 1 * 
LCD D4 pin to digital pin 5 * LCD 
D5 pin to digital pin 4 * LCD D6 pin 
to digital pin 3 * LCD D7 pin to 
digital pin 2 * LCD R/W to ground 

• I used a 1K resistor instead 
of a 1 0K pot. 

• Use the 10K pot to control 
the contrast. 

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Parallax Ping))) Theremin 

Step 3 — Wire Ping))) and audio 

• Sound is on pin 10 and ping is on 
pin 7. 1kQ resistor on headphone 

Step 4 — Upload code 

• Code can be found here . 

• Copy and paste code to Arduino 
IDE and click "Upload". 

This document was last generated on 2012-11-01 10:32:21 AM. 

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